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Light Material Reflecting Factor

Reference data and engineering information about light material reflecting factor for electrical applications.

lightmaterialreflectingfactorCalculator

Overview

Engineering reference data for Light Material Reflecting Factor in electrical engineering.

Key Formulas

Ohm's Law

V=IRV = IR

Voltage = Current × Resistance.

Power

P=VI=I2R=V2/RP = VI = I^2R = V^2/R

Electrical power.

Energy

E=PtE = Pt

Energy = Power × Time.

Variables

SymbolDescriptionUnit
VVVoltageV
IICurrentA
RRResistanceΩ
PPPowerW

Material Reflecting Factors

44 rows
Light reflecting factors (reflectance) for common materials and surfaces
Material
Reflection Factor (%)
Aluminum coatings, matte55 - 56
Aluminum, anodized, matte80 - 85
Aluminum, matte55 - 75
Aluminum, polished65 - 75
Aluminum, pure, highly polished80 - 87
Body where no light is reflected (Black body)0
Body where all light is reflected100
Brick, red10 - 15
Chrome, polished60 - 70
Concrete, rough20 - 30
Copper, highly polished70 - 75
Crops15 - 24
Forrest7 - 14
Granite20 - 25
Ice32 - 38
Lacquer, pure white80 - 85
Limestone35 - 55
Marble, polished30 - 70
Nickel, highly polished50 - 60
Oak, light polished25 - 35
Paint, brown20 - 30
Paint, dark blue15 - 20
Paint, dark green15 - 20
Paint, dark red15 - 20
Paint, light green45 - 55
Paint, light yellow60 - 70
Paint, medium grey25 - 35
Paint, white75 - 85
Paper, white70 - 80
Plaster, dark15 - 25
Plaster, light40 - 45
Plywood, rough25 - 40
Sand - dry38 - 42
Sand - wet22 - 28
Sandstone20 - 40
Snow - fresh85
Snow - old45
Silver, highly polished90 - 92
Silvered mirror, behind glass80 - 88
Soil - dry22 - 34
Soil - dark wet7 - 14
Stainless steel50
Vitreous Enamel, white65 - 75
Water7 - 9

Source: engineeringtoolbox.com

Albedo Definition

Albedo is defined as the diffuse reflected solar radiation related to the total solar radiation. It represents the reflectivity of a surface and is typically expressed as a dimensionless coefficient or percentage.

References